Signaling device.



F. J. POINAN. SIGNALING DEVTUE. Nuon-rol nnnn un. 1u, ma.

1,007,235, Patented 0615.31, 1911.

314mm Foz cnd- UNITED STATES PATENT OFFICE.

FRANCIS J.l POINAN, 0F ROCHESTER. NEW YORK, ASSIGNOR`OF ONE-HALF TO FRANK- LIN DECKER AND ONE-FOURTH T0 JOSIAH B. BREWER, BOTH 0F ROCHESTER, NEW

YORK.

sreivannvol DEVICE.

Specification of Letters Patent.

Patented Oct. 31, 1911.

Application ill'ed April 19, 1910. Serial No. 556,423.

To all whom 'it may concern.'

Be it known that I, FnANf 9J. PoiNAN, a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented certain new and useful Im rovements in Signaling Devices; and I- o hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appcrtains to make and use the same.

My invention relates to improvements in signaling devices and is a specific improvement over the construction shown 1n m former application, filed March (i, 1909, Serial No. 481,77 3.

My invention is intended for any form of signal lamp, but )rimarily intended to be applied to automobiles, or other vehicles, to provide that in all cases' if one of the si nal lamps has been extinguished, an auxiliary signal lamp shall be automatically lighted, or other signalin means operated, to indicate to thechau eur that the main signal light has been extinguished.

With this object in view, my. invention consists in the constructionand; combinations parts as hereinafter desdliibed 'and' claimed.

In the .accompanying drawin' -Figure 1 is a View, partly in section, s owinga vehicle lamp with my invent-ion' app ied thereto, and Fig. 2 is a cross-section, on a larger scale, showing the thermostat.

1 indicates a lamp casing iii-which is secured on oil` lamp 2, although obviouslany preferred form of lamp could be use The upper part of the casing is provided with an extension 3, in which is located the device operated by the heat of the lam in case the lam should become extinguis ed, or the light t ereof become very low. This thermostatic device may be of any form, but preferably consists of a cylinder 4 made of zinc or other readily -expansble metal, a brass cap 5 adapted to he secured on one end thereof, and an ironrod 6, provided with a platinum point 7 and inclosed within A a. hollow asbestos sheathing 8, located inside the hollow zinc cylinder 4. The cylinder 4 and ca l5 may, however, 4be made in one piece o any desired kind of metal.

A 4 9 represents a hard rubber nut, screw- .threaded onf the inside and outside and4 a screwLthreade 12 is a binding post in the zinc cylinder 4, and 13 is a slmilar binding post in the brass nut 10, to Which.bind1ng osts are secured wires 14 and 15, connected to a battery 16 and having in the same circuit an electric lam 17, located inside the casing 1 and behin the ordinary lens 18. The rod 6 is provided-with a hand wheel 20 anda screw-threaded ortion 21, which works in d) ortion of the brass nut 10. 19 represents ook' nuts to prevent the parts from being loosened by jarrin The hand wheel 2O is so adjuster? as to bring t-he platinum point 7 in contact with thediead 5 when the cylinder 4 is not heated. This is done before the lamp 2 is lighted, and in this position the lamp 17 is lighted. IVhen the lamp 2 is lighted, it heats the zinc cylinder 4, causing1 it to expand faster thanV the iron rod 6, t e latter being con tained within the asbestos tube 8. This breaks the connection between the platinum point 7 of the rod 6 and the nut or cap 5,A so ,that the circuit from the battery 16 through the thermostatic device and through the lamp 17 is broken. This condition continues as long as the clamp 2 continues to burn brightly. Should the lamp 2 go out or the flame. thereof become verylow, the4 'lamp 17 is lighted.

22 represents a switch for o ening or closing the circuit throu h the atterv 16 and the electriclamp and t ermostat. en' the vehicle is not in use, the hand 'wheel 20 is turned so as to disengage the platinum oint 7 from the head or cap 5, or, ifv

esired, the circuit is broken by opening the switch 22. VThe latter method is preferable,

to avoid the necessity of readjustment.

In a vehicle lamp, the combination of a lamp casing provided withan extension toits upper part, a lamp in said casing, a

thermostatie device arranged lngitudinnll in the extension of said cnsng Imd adepte when heated by Suid lamp, te reuk n circuit, an electric lump also leeeted within seid casing and mounted in the reni' side thereof, und a battery circuit passing in series through @Seid thermostatie deviee und Suid electric html? ,f whereby when the lmnp is exbnsuxshed the circuit is elesed und the electric lamp lighted, substantially as de- 10 scribed.

In testimony whereof, I affix my signature, in pres-eme of two witnesses.

FRANCIS J. POINAN.

YV itiiesses JOHN A. C. WRIGHT, (lice. lf. SLOCUM. 

